Self-measuring oil-pump.



N. 855,504. PATBITTEDTUNE'4,*I'90'7lVi L Y J. B. DAVIS. A

SELF MEASURING OIL PUMP.

APPLICATION FILED MAY 3, 1906.A j

3 SHEETS-SHEET 1.

No. 855,504. PATENTBD JUNE 4, 1907.

J. B. DAVIS.

SELF MBASURING OIL P UMP.

APPLIOATION FILED MAY 3, 1906.

3 SHEETS-SHEET 2.

S11/neuron No. 855,504. Y PTITTE'D JUNE 4, 1907.

J. B. DAVIS.

SELF MEASURING 0U.. PUMP.

APPLICATION FILED MAY 3,1906` 3 SHEETS-SHEET 3.

attenua,

UNITED STATES .PATENT OEEIOE.

Specification of Letters Patent.

Patented .rime-i, i907.

Application filed May 3, 1.906. Serial No. 314,96@

To all 1071.07.11, t Hwang/concern:

Be it known that I, JOHN B. DAVIS, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have 'invented certain new and useful Improvements in Self-Measuring Oil-Pumps;

and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to thevaccompany-` .ing drawings, and to the letters and figures gree of eiliciency. and utility which meet all requirements.

Referring to thel'drawings- Fi ure 1, is a front elevation of my improved upleX selfmeasuring Oil pump. Fig. 2, isa rear elevation thereof. Fig. 3, is a sideelevation thereof. Fig. 4, is a top plan view thereof. Fig. 5, is a detail of the driving racks. Fig. 6, is a detail of the discharge register through which the quantities of oil ldispensed are visually indicated; said view being on the line y-fy oll Fig. 7. Fig. 7, is a detail on the line of Fig. 3 showing the discharge register-actuating mechanism. Fig. 8, is a detail of the foot valve. Fig. 9, is a longitudinal section of the lower art of the pump. Fig. 10, is a sectional detai of one of tons. Figs. 11 and 12, are detail' views of the gallon meter through which the total oil discharged in gallonsfrom. the cylinders, is recorded. Fig. 13, is a detail view of the hose which is utilized when it is desired to deliver oil from the pump to a stationary tank, such as is used in a motor vehicle. Fig. 14, is a perspective view of the upper part of the pump showing the discharge register and the gallon meter.

In a detail description of the invention, similar reference characters indicate corresponding parts.

The pump cylinders 1-1 are mounted upon a hollow base 2 and communicate through suction valves 3 3 with a curved food pipe 4. 'lhe pump cylinders in the present instance are limited in their capacity to a hall' gallon each, but of course their capacity may be varied from this. The valves 3*?, seat labove the ends'of the feed ipe 4. This"'double-ended feed pipe 4 is fed om a supply tank (not shown) by a single feed pipe 5 which connects with the middle of said pipe 4 and has attached to its lower end lying within` said tank, a foot valve consisting of two similar valves 6-6. Two of such valves are employed in order to revent leakage or any inoperativeness in t e event that one of'such valves should become defective while in operation, for example, by clogging. These valves it will be understood, `like the .cylinder valves 3-3, are lifted from theirseats by the vacuum created by the moving pistons 7-7 which have opposite move-y ments. Thedetails of construction of said pistons are illustrated in Fig. 10 of the drawings and comprise a cup 8 having an annularly projected flange 9 surrounding its middle circumference andr a spider 10 through which it is connected to the piston rod 11. The said spider 10 is screwed onto the lower end oi' an eX-teriorly screw-threaded sleeve 12, said sleeve being placed upon the lower end of the piston rodY and supported thereon by resting upon an enlargement ,or head 14 on the extreme end of said iston rod. The top of the cup 8 is engage by a washer 15 which also screws onto the sleeve 12 and is jammed against said ca by a nut 13 which engages said sleeve.l ithin the lower end of the cup 8 there is screwed a ring 16 which provides aseat for a piston valve 17.

Engaging'the valve seat 16 is a washer 18 which, together with the flange portion 9 and the washer 15 form` two annular spaces around the piston for two .expansion springs 19-19 which lie in said spaces and surround the body of the piston. Thesprings 19- are made of wire coiled, with their ends united to form rings. Inclosing these-springs are two piston cups 2() which engage the surrounding surfaces of the pump'cylinders, and being of leather or other suitable packing material, are maintained in contact with the pump cylinders through the outward pressure of the springs, and thus alll inaccuracies of the cylinders are taken up. This construction of piston is most clective in its operation owing to the action of the springs upon the leather cups serving at all times to compensate for the wear between the pump cylinders and the pistons. The piston rods 11--11l work through stullng boxes y21 in a cap 22 which surmounts the top of the pump cylinders and IIC which are bolted to said cap 22.

provides a support for the super-structure consisting of the vframes or standards 23 through these two valves 26 and 27 the oil is delivered from the pump to the receptacles;

-valve 26 being utilized to deliver the oil to any portable receptacle, and valve 27 being utilized in connection with the hose shown in Fig. 13 to deliver the oil to a stationary tank,

such for example, as the gasolene tank of an automobile. Mounted `upon each of the piston-rods is a rack 28 having the teeth thereon lying inwardly and engaging opposite sides of a pinion 29see Fig. 4. The pinion 29 is on a shaft 3() which is driven from the primaryactuating shaft 31 through pinions 32 and 33, the former pinion being on the shaft with the pinion 29. 34 designates a housing having a sight opening 35; within this housing there is mounted'a set of counters 36 which 1are viewable through the sight opening 35;

the housing 34 is secured to the housing 37 which incloses the gear wheels just referred to which transmit movement to the rack pinion 29. x The counters 36 are utilized to record the total quantity yof-ol dispensed from the pump cylinders and may be termed a gallon meter; said counters are actuated concurrently with each measuring operation from the main shaft 31 which is the driving shaft and which is operated from the crank handle 37.

The main actuating shaft 31 has its end projecting into the housing 34, and secured to vsaid end-is a disk 38 carrying a ratchet awl 39, which engages a ratchet wheel 40 oose on= the end of the shaft 31 and has connected to it a spur wheel 41 which meshes with a spurv wheel 42y on the shaft of the counters 36. On the opposite side of the super-structure is another wheel 46 shown in detail in Figs. 6 and 7 and which is intended to register and indicate the oil discharged in small quantities up to the full capacity of each cylinder7 which in the present instance is a half gallon; this last named register has a housing 43 of cylindrical form which is attached to the standards 23 and has a sight opening 44 through which the characters on the wheel are visible. The said wheel 46 is mounted upon an independent shaft which has its support in thc walls of the housing 43; also fixed to said shaft is a ratchet wheel 47 through which movement is im arted to the shaft upon each-elevation of t e racks 28. 48 designates a reciprocating slide mounted iin guides 49 on the interior of the housing 43 ;l lthis slide 48 carries a ratchet pawl 5() which The cap 22l l is maintained in constant engagement with the ratchet wheel 47 by a plate spring 51 secured to said slide. Upon opposite ends of said slide 48 vthere are pins 52 which are engaged by the slotted ends of levers 53, said of the housing.4 The lower ends of these levers are ta ered as at and said tapered ends lie in t e pathways of trip arms or projections 56 on the lower ends of the racks 28, so that when said racks are elevated they acing in contact with the lower ends of said levers and thus impart movement to the slide 48 and to the shaft 45 through the pawl 50 and ratchet wheel 47. The periphery of the wheel 46 bears figures indicating gallons and fractional parts thereof, and these are viewable through the sight opening 44 tain the quantity of oil dispensed 50 designates a stop on rod 51 by which the piston stroke is regulated for measuring this stop is engaged by a lugl52 carried on each of the racks 28. The lugs 53 and 54 are stops for pints and quarts. In drawing a pint, the lug 52 on either rack as the case may be, is car- 'ried up to lug 54 which will measure av half pint, and by then reversing and the stroke, will give a pint measure, taking a pump in a condition tov draw any specific quantity within the capacity of the pump.

An operation of the invention is as follows: Through the crank handle 37 the pinion 29 is operated Ito drive the piston 7 in opposite through the pipe 24 to either of the valves register 46 is actuated when the projection 56 on the rack engages the lever 53. The position of the wheel 46 is viewed through sight opening 44 in the housing and the quantity by thus viewing. the indicator wheel 46 as the' pump is operated; in the meantime, the gallon meter registers each gallon pumped.

I claim:

1f-. In a self-measuring oil pump, the combination of a piston and piston rod, means for imparting reciprocating' movement to `4.said piston and-piston rod, a discharge register to indicate the oil pumped by the piston in gallons and half gallons, agallon register to vrecord the total quantity pumped by the piston for any given period, and means interposed between the discharge register and the' piston rod extensions whereby said discharge register is actuated at the -limit of 'each elevation of each piston rod.

2.l In a self-measuring oilpump, a pump cylinder, a-piston and piston rod movable in said cylinder, a rack extending from the piston rod, a crank handle, gearing between the crank handle and the rack, a discharge register to indicate the specific quantities of oil tuate one or the other ofthe levers 53 by comhalf pint out of each cylinder and leaving the 26 or 27; in the meantime,` the discharge of oil delivered from the pump is regulated levers having'their fulcrums at 54 in the side tol ascer- IOO directions; the rising piston forces the oil IIO seaeoe ward movement of said piston rod, and av total-register to record the quantity of oil pumped in any given period, said total register being operated from the crank handle.

3. In a self-measuring eil pump, the combination with duplex cylinders, a piston and piston rod in each cylinder, racks extending from said piston rods, means engaging said racks to operate the pistons in opposite directions, a discharge register to indicate the specific quantities of oil dispensed, means interposed between said discharge register and said racks for actuating said register, said means being out of engagement When the racks are in their lower positions, and atotal register to indicate the total quantity of oil dispensed, said total register being operated from the means which actuate the pistons.

4. Inla self-measuring oil pump, duplex cylinders, a piston and piston rod for each cylinder, a rack connected to each piston rod, means for driving said racks in reverse directions, a discharge register, to indicate the specific quantities of oil discharged from the cylinders, means comprising a reciprocating slide With ratchet and lever devices for actuating said discharge register Jfroml the piston rod extensions, and means on the piston rod extensions for engaging said ratchet and lever devices to actuate the slide.

5. In a self-measuring oil pump, pump cylinders, a piston and a piston rod for each cylinder having rack extensions, means engaging said racks to operate the pistons,a

ischarge register common to both of said cylinders to register the quantities of oil discharged frorn each 'cylinder in each operation, register-actuating devices for operating said register at the linut of the upward movement of each piston, means on each of the rack extensions of the piston rods Jfor engaging said register-actuating devices at the limit of each upward movement of each piston, said means on said racks being otherwise out of engagement with the yregister-actuating devices. v

In testimony whereof I aflix my signature, in presence of'two Witnesses.

JOHN B. DAVIS. 

